U.S. patent number 7,872,206 [Application Number 12/013,852] was granted by the patent office on 2011-01-18 for power supply circuit connector and method of connecting power supply circuit.
This patent grant is currently assigned to Nissan Motor Co., Ltd., Yazaki Corporation. Invention is credited to Kouji Iwashita, Yasuo Matsunaga, Shigeo Mori.
United States Patent |
7,872,206 |
Matsunaga , et al. |
January 18, 2011 |
Power supply circuit connector and method of connecting power
supply circuit
Abstract
A power supply circuit connector includes: a first housing
including: a pair of main circuit terminals connected with each
other via a first switch terminal, and a pair of mated state sensor
terminals connected with each other; a second housing mated with or
detached from first housing, second housing including: first switch
terminal for connecting the pair of main circuit terminals by a
lever rotated to a first certain position; the lever rotatably
supported to second housing and including: a second switch terminal
for making the following operation: with the pair of main circuit
terminals kept connected with each other, connecting the pair of
mated state sensor terminals with each other by lever rotated to a
second certain position after first certain position; and a
mating-detaching mechanism for making the following operations by
rotated lever: mating second housing with the first housing, and
detaching second housing from the first housing.
Inventors: |
Matsunaga; Yasuo (Sagamihara,
JP), Iwashita; Kouji (Isehara, JP), Mori;
Shigeo (Makinohara, JP) |
Assignee: |
Nissan Motor Co., Ltd.
(Yokohama-shi, JP)
Yazaki Corporation (Tokyo, JP)
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Family
ID: |
39323582 |
Appl.
No.: |
12/013,852 |
Filed: |
January 14, 2008 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20080185276 A1 |
Aug 7, 2008 |
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Foreign Application Priority Data
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Jan 17, 2007 [JP] |
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2007-007737 |
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Current U.S.
Class: |
200/335; 439/157;
439/188 |
Current CPC
Class: |
H01H
85/547 (20130101); H01R 13/62938 (20130101); H01R
13/62955 (20130101); H01R 13/701 (20130101); H01R
13/6295 (20130101); H01H 9/085 (20130101); H01R
13/71 (20130101); H01R 33/975 (20130101); H01R
33/96 (20130101); H01R 33/97 (20130101); H01R
2201/26 (20130101) |
Current International
Class: |
H01H
3/04 (20060101) |
Field of
Search: |
;439/157,188
;200/335,332,559 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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2002-343169 |
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Nov 2002 |
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JP |
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2003-100382 |
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Apr 2003 |
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JP |
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2003-100386 |
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Apr 2003 |
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JP |
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2005-142107 |
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Jun 2005 |
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JP |
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Primary Examiner: Leon; Edwin A.
Attorney, Agent or Firm: Foley & Lardner LLP
Claims
What is claimed is:
1. A power supply circuit connector of a power supply circuit, the
power supply circuit connector comprising: a first housing
including: a pair of main circuit terminals configured to be
connected with each other via a first switch terminal, for bringing
the power supply circuit into a conduction state, and a pair of
mated state sensor terminals configured to be connected with each
other, for bringing the power supply circuit into the conduction
state; a second housing configured to mate with or to be detached
from the first housing, wherein the second housing includes the
first switch terminal configured to connect the pair of the main
circuit terminals by a lever being rotated to a first certain
position; the lever rotatably supported to the second housing,
wherein the lever includes a second switch terminal configured to,
in a state that the pair of the main circuit terminals are kept
connected with each other, connect the pair of the mated state
sensor terminals with each other by the lever being rotated to a
second certain position after the first certain position; and a
mating-detaching mechanism configured to, by the rotated lever,
mate the second housing with the first housing, and detach the
second housing from the first housing, wherein at least a head end
part of each of the mated state sensor terminals extends along a
rotation track of the second switch terminal.
2. The power supply circuit connector according to claim 1, wherein
the head end part of each of the mated state sensor terminals
extends along the rotation track of the second switch terminal such
that the mated state sensor terminals become connected only by
rotation of the lever.
3. The power supply circuit connector according to claim 1, further
comprising a locking member configured to lock the lever in the
second certain position.
4. The power supply circuit connector according to claim 3, wherein
the locking member includes a movable member configured to: move
from a rotation track of the lever to an area out of the rotation
track of the lever, to thereby rotate the lever from the first
certain position to the second certain position, and move from the
area out of the rotation track of the lever to the rotation track
of the lever, to thereby stop the lever from rotating from the
second certain position to the first certain position.
5. The power supply circuit connector according to claim 3, wherein
the locking member is elastic.
6. The power supply circuit connector according to claim 5, wherein
the elastic locking member is elastically deformable rearward.
7. The power supply circuit connector according to claim 5, wherein
the elastic locking member is a single member.
8. The power supply circuit connector according to claim 1, wherein
a head end part of the lever has an inserted connector part having
an opening end face that is open at least in a direction of the
rotated lever, wherein the second switch terminal is provided in
the inserted connector part such that the second switch terminal
does not protrude from the opening end face of the inserted
connector part, wherein the first housing has a receiving connector
part configured to receive the inserted connector part, and wherein
the mated state sensor terminals are provided in the receiving
connector part such that the mated state sensor terminals do not
protrude from an opening end face of the receiving connector
part.
9. The power supply circuit connector according to claim 8,
wherein, on a side end face of the inserted connector part on a
side of a rotary shaft of the lever, an opening part is defined
continuously with the opening end face of the inserted connector
part which is open.
10. A power supply circuit connector of a power supply circuit, the
power supply circuit connector comprising: a housing including: a
first switch terminal configured to connect a pair of main circuit
terminals of another housing by a lever rotated to a first certain
position, and a pair of mated state sensor terminals configured to
be connected with each other; the lever rotatably supported to the
housing, wherein the lever includes a second switch terminal having
a first part and a second part defining therebetween an inner width
which is narrower downward in a right-and-left direction, wherein a
lower end part of the second switch terminal is elastically
deformable around an upper end part of the second switch terminal
on right and left sides; and a guide groove defined in the lever
and to which a guide pin is inserted, wherein at least a head end
part of each of the mated state sensor terminals extends along a
rotation track of the second switch terminal.
11. The power supply circuit connector according to claim 10,
wherein the head end part of each of the mated state sensor
terminals extends along the rotation track of the second switch
terminal such that the mated state sensor terminals become
connected only by rotation of the lever.
12. The power supply circuit connector according to claim 10,
further comprising a locking member configured to lock the lever in
a second certain position after the first certain position.
13. The power supply circuit connector according to claim 12,
wherein the locking member is elastic.
14. The power supply circuit connector according to claim 13,
wherein the elastic locking member is elastically deformable
rearward.
15. The power supply circuit connector according to claim 13,
wherein the elastic locking member is a single member.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a power supply circuit connector
for breaking or connecting a power supply circuit of a hybrid car,
an electric car and the like. The present invention also relates to
a method of connecting the power supply circuit.
2. Description of the Related Art
For operational safety of a hybrid car or an electric car, it is
necessary to implement maintenance and the like in a state that a
power supply circuit is manually broken (cut off). U.S. Pat. No.
6,982,393 {family of Japanese Patent Application Laid-Open No.
2005-142107 (=JP2005142107)} discloses a known device for breaking
the above power supply circuit.
The device of U.S. Pat. No. 6,982,393 has the following operations:
Rotating a lever allows one connector housing to be received in
another connector housing, thus connecting main circuit terminals
with each other.
Moreover, sliding the one connector housing in the another
connector housing connects mated state sensor terminals, thereby
bringing the power supply circuit into a conduction state.
SUMMARY OF THE INVENTION
It is an object of the preset invention to provide a power supply
circuit connector which allows a rotation of a lever to connect a
pair of main circuit terminals with each other and to connect a
pair of mated state sensor terminals with each other, keeping
small-sized power supply circuit connector.
It is another object of the present invention to provide a method
of connecting the power supply circuit.
According to a first aspect of the present invention, there is
provided a power supply circuit connector of a power supply
circuit, the power supply circuit connector comprising: a first
housing including: a pair of main circuit terminals adapted to be
connected with each other via a first switch terminal, for bringing
a power supply circuit into a conduction state, and a pair of mated
state sensor terminals adapted to be connected with each other, for
bringing the power supply circuit into the conduction state; a
second housing configured to mate with or to be detached from the
first housing, the second housing including: the first switch
terminal configured to connect the pair of the main circuit
terminals by means of a lever rotated to a first certain position;
the lever rotatably supported to the second housing, the lever
including: a second switch terminal configured to make the
following operation: in a state that the pair of the main circuit
terminals are kept connected with each other, connecting the pair
of the mated state sensor terminals with each other by means of the
lever rotated to a second certain position after the first certain
position; and a mating-detaching mechanism configured to make the
following operations by means of the rotated lever: mating the
second housing with the first housing, and detaching the second
housing from the first housing.
According to a second aspect of the present invention, there is
provided a power supply circuit connector of a power supply
circuit, the power supply circuit connector comprising: a housing
including: a first switch terminal configured to connect a pair of
main circuit terminals of another housing by means of a lever
rotated to a first certain position; the lever rotatably supported
to the housing, the lever including: a second switch terminal
having a first part and a second part defining therebetween an
inner width which is narrower downward in a right-and-left
direction, a lower end part of the second switch terminal being
elastically deformable around an upper end part of the second
switch terminal on right and left sides; and a guide groove defined
in the lever and to which a guide pin is inserted.
According to a third aspect of the present invention, there is
provided a method of connecting a power supply circuit, the method
comprising: a first operation for engaging a first housing with a
lever, the first housing including a pair of main circuit terminals
and a pair of mated state sensor terminals while the lever being
rotatably supported to a second housing; a second operation
including the following sub-operations: rotating the lever to a
first certain position to thereby mate the second housing with the
first housing, and connecting the pair of the main circuit
terminals with each other via a first switch terminal provided in
the second housing; and a third operation including the following
sub-operations: rotating the lever to a second certain position
after the first certain position, connecting the pair of the mated
state sensor terminals with each other via a second switch terminal
provided in the lever, and bringing the power supply circuit into a
conduction state.
Other objects and features of the present invention will become
understood from the following description with reference to the
accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a schematic of an electric circuit diagram of a power
supply circuit connector, an according to an embodiment of the
present invention.
FIG. 2 is a side view of a part of a vehicle, showing where the
power supply circuit connector is disposed, according to the
embodiment.
FIG. 3 is a plan view of a part of the vehicle, showing where the
power supply circuit connector is disposed, according to the
embodiment.
FIG. 4 is a perspective view of the power supply circuit connector
in a main circuit mated state, according to the embodiment, where
FIG. 4A shows an overall structure of the power supply circuit
connector while FIG. 4B shows the power supply circuit connector
partly cut.
FIG. 5A is a perspective view showing a state where the power
supply circuit connector is exploded, i.e., completely detached
state, while FIG. 5B is a perspective view of an essential part of
FIG. 5A, according to the embodiment.
FIG. 6A is a perspective view of the completely mated state while
FIG. 6B is a perspective view of the lever temporarily locked
state.
FIG. 7A, FIG. 7B, FIG. 7C and FIG. 7D show a guide groove relative
to a guide pin in respective states of the power supply circuit
connector, where FIG. 7A shows a completely mated state, FIG. 7B
shows a main circuit mated state, FIG. 7C shows a lever temporarily
locked state, and FIG. 7D shows a completely detached state.
FIG. 8 a cross sectional view taken along the line VIII-VIII in
FIG. 6A.
FIG. 9A, FIG. 9B and FIG. 9C each are an enlarged side view of the
locking member 26 in operation, where FIG. 9B shows the main
circuit mated state, and FIG. 9C shows the completely mated
state.
FIG. 10 is a time chart showing state changes of the power supply
circuit connector for bringing a power supply circuit into the
conduction state.
FIG. 11 shows operations corresponding to respective time points A
to D of the time chart in FIG. 10.
FIG. 12A and FIG. 12B show an examples of deforming a locking
member.
FIG. 13 shows an example of deforming the terminals.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In the following, an embodiment of the present invention will be
described in detail with reference to the accompanying
drawings.
For ease of understanding, the following description will contain
various directional terms, such as left, right, upper, lower,
forward, rearward and the like. However, such terms are to be
understood with respect to only a drawing or drawings on which the
corresponding part of element is illustrated.
Hereinafter, referring to FIG. 1 to FIG. 13, a power supply circuit
connector 100 is to be set forth, according to an embodiment of the
present invention.
FIG. 1 shows a schematic of an electric circuit diagram, showing a
part of a power supply circuit 10 of an electric car or a hybrid
car (hereinafter referred to as vehicle 20 as shown in FIG. 2). As
shown in FIG. 1, the power supply circuit connector 100
(hereinafter referred to as "service disconnecting switch 100" or
"SDSW 100" for short) according to the embodiment is provided on a
way of the power supply circuit 10 and serves as a main circuit
switch 100A for breaking batteries from each other or connecting
the batteries with each other. That is, the SDSW 100 has a pair of
connector housings (otherwise referred as to "first housing 1" and
"second housing 2") which are attachable and detachable, and the
attaching and detaching of the connector housings 1, 2 respectively
disconnect and connect an intermediate potential part X-Y of a
battery--to be described afterward.
An electricity from the battery flows to an inverter INV (denoted
but not shown in FIG. 1), a 14 V DC/DC converter (denoted but not
shown in FIG. 1) and a 42 V DC/DC converter (denoted but not shown
in FIG. 1) via relays R1, R2. The electricity from the battery is
sensed with a current sensor CS and a voltage sensor (not shown in
FIG. 1).
Not only as the main circuit switch 100A, the SDSW 100 also serves
as a mated state sensor switch 100B for sensing a mated state of
the pair of the connector housings 1, 2. When a signal from the
mated state sensor switch 100B is inputted to an ECU 200 and
thereby the mated state of the connector housings 1, 2 is sensed,
the ECU 200 turns on the relays R1, R2.
As a result, when the main circuit switch 100A is turned on and
also the mated state sensor switch 100B is turned on, the power
supply circuit 10 is brought into a conduction state.
FIG. 2 and FIG. 3 each show where the SDSW 100 is disposed. FIG. 2
is a side view of a part of the vehicle 20 while FIG. 3 is a plan
view of a part of the vehicle 20. In a trunk room 107 behind a rear
seat back 101 and a gasoline tank 109, a luggage board 102 is
laid.
Below the luggage board 102, a battery pack 104 is disposed above a
tire 110 and between a right wheel house 103R and a left wheel
house 103L. Behind the battery pack 104, a spare tire 105 and an
auxiliary machine 106 such as an audio and the like are disposed.
The SDSW 100 is disposed in a gap G1 between the battery pack 104
and the auxiliary machine 106.
As described above, various components are disposed below the trunk
room 107, leaving a small space. Therefore, it is preferable that
the SDSW 100 is as small as possible. Moreover, the SDSW 100 is
operated in a maintenance period of a power supply system or in an
emergency of the vehicle 20. Therefore, the SDSW 100 should have a
preferable operability even when being disposed in a place that is
not preferable for operation, i.e., below the luggage board
102.
Moreover, the SDSW 100 has such a structure that the connector
housings 1, 2 should not be detached by a vehicular vibration and
the like during travel period. To meet the above, the SDSW 100
according to the embodiment has a structure set forth below.
<Structure of SDSW 100>
FIG. 4A is a perspective view showing an overall structure of the
SDSW 100 (main circuit mated state), according to the embodiment.
FIG. 4B is a view of the SDSW 100 cut along the line IVB-IVB in
FIG. 4A.
FIG. 5A is a perspective view showing a state where the SDSW 100 is
exploded (completely detached state). FIG. 5B is a perspective view
of an essential part of FIG. 5A. Besides, hereinafter, for ease of
explanation and for convenience sake, front, rear, left and right
are defined as shown in FIG. 4A, FIG. 4B, FIG. 5A and FIG. 5B.
The SDSW 100 has a first housing 1 fixed to the vehicle 20 and a
second housing 2 configured to be received in the first housing 1.
A lever 3 rotatable upward and downward is fitted to the second
housing 2. Rotation of the lever 3 pushes the second housing 2 into
the first housing 1, allowing the second housing 2 to mate with the
first housing 1 and allowing a head end part 3a of the lever 3 to
mate with the first housing 1. As such, the above described main
circuit switch 100A and mated state sensor switch 100B are turned
on. Each of the first housing 1, the second housing 2 and the lever
3 is made of resin.
As shown in FIG. 5A, a cover 4 is mounted above the second housing
2. Holding a holding part 4a at a rear end part of the cover 4 and
then pulling the holding part 4a rearward can remove the cover 4.
With the cover 4 thus removed, replacement and the like of
components received in the cover 4 are implemented. An upper face
of the cover 4 has a step 4d, making a front upper part 4b of the
cover 4 lower than a rear upper part 4c of the cover 4.
An upper part (an upper housing 21) of the second housing 2 is so
formed as to be wider than a lower part (a lower housing 22) in the
right-left direction. On each of a right sideface and a left
sideface of the upper housing 21, a positioning protrusion 23, a
rotary shaft 24 and a stopper 25 are disposed in such a
configuration as to each protrude. Moreover, a step part 2b is
disposed on a front end face of the second housing 2. A locking
member 26 stands on the step part 2b.
As shown in FIG. 4A, FIG. 4B and FIG. 5A, the lever 3 has a first
connector member 32 and a second connector member 33 each of which
couples a pair of right and left arm plates 31, 31 with each other.
In a right-left center of the first connector member 32, a
connector part 34 (otherwise referred to as "inserted connector
part 34") is provided in such a configuration as to protrude in the
direction of rotating the lever 3. A taper part 32a is formed on
either side of the connector part 34. The rotary shaft 24 of the
upper housing 21's sideface passes through the arm plate 31.
Thereby, the lever 3 is supported in such a configuration as to
rotate around the rotary shaft 24. In the right-left direction, a
gap G2 is defined between the lever 3 and the lower housing 22. The
first housing 1 is inserted into the gap G2.
The arm plate 31 has a pair of positioning hole parts 31a, 31b.
Inserting the positioning protrusion 23 on the upper housing 21 's
sideface into any of the positioning hole parts 31a, 31b stops the
lever 3 in a certain rotary position (completely detached
position). In this case, inserting the positioning protrusion 23
into the hole part 31b allows the lever 3 to stand substantially
vertically, as shown in FIG. 5A. This is defined as a completely
detached state. In the completely detached state, the main circuit
switch 100A and the mated state sensor switch 100B each are turned
off--to be described afterward.
As shown in FIG. 6A (completely mated state), inserting the
positioning protrusion 23 into the hole part 31a allows an upper
end face of the lever 3 to be substantially parallel to an upper
face of the cover 4, thus positioning the second connector member
33 of the lever 3 above the front upper part 4b of the cover 4.
This is defined as a completely mated state, and the position of
the lever 3 in the completely mated state is defined as a
completely mated position (otherwise referred to as "second certain
position P2"). In the completely mated state, the connector part 34
of the lever 3 is positioned frontward relative to the second
housing 2, turning on both of the main circuit switch 100A and the
mated state sensor switch 100B--to be described afterward.
FIG. 4A (likewise FIG. 4B) shows a state in the process from the
completely detached state to the completely mated state. This is
defined as a main circuit mated state. The position of the lever 3
in the main circuit mated state is defined as a main circuit mated
position (otherwise referred to as "first certain position P1"). In
the main circuit mated state, the main circuit switch 100A is
turned on while the mated state sensor switch 100B is turned
off--to be described afterward.
As shown in FIG. 4A and FIG. 4B, a part of a periphery of the arm
plate 31 is formed substantially into an arc (arc part 31c) around
the rotary shaft 24. Latch parts 31d, 31e are formed at respective
ends of the arc part 31c. The latch parts 31d, 31e caused to abut
on the stopper 25 on the upper housing 21's sideface limit the
lever 3's rotary range to between the completely mated position
(second certain position P2) and the completely detached
position.
As shown in FIG. 5A, the first housing 1 has a receiver 11 for
receiving the second housing 2. At a front part of the receiver 11,
a connector part 12 (otherwise referred to as "receiving connector
part 12") is provided in such a configuration as to correspond to
the connector part 34 of the lever 3. A guide pin 13 (otherwise
referred to as "mating-detaching mechanism" in combination with
guide groove 35) protrudes on each of right and left outer
sidefaces of the first housing 1. The receiver 11 is so formed as
to correspond to a profile of the lower housing 22. The lower
housing 22 alone is received in the receiver 11 while the upper
housing 21 protrudes from the receiver 11.
A substantially arc guide groove 35 (otherwise referred to as
"mating-detaching mechanism" in combination with guide pin 13) is
formed in the arm plate 31 of the lever 3. As shown in FIG. 4A
(likewise FIG. 4B), on a right-left inner face of the arm plate 31,
a guide part 35a protrudes along the guide groove 35. The guide
part 35a is formed in a position other than a peripheral part 35b
of the arm plate 35. As shown in FIG. 6B in combination with FIG.
5A, only from the completely detached state, the guide pin 13 can
be inserted into the guide groove 35 via the peripheral part 35b
apart from the guide part 35a. Herein, FIG. 6B shows a state where
the guide pin 13 is locked to an end part of the guide groove 35,
bringing about a lever temporarily locked state.
FIG. 7A, FIG. 7B, FIG. 7C and FIG. 7D show the guide groove 35
relative to the guide pin 13 in respective states of the SDSW 100,
where FIG. 7A shows the completely mated state, FIG. 7B shows the
main circuit mated state, FIG. 7C shows the lever temporarily
locked state, and FIG. 7D shows the completely detached state.
As shown in FIG. 7D, in the completely detached state, an end part
(the peripheral part 35b) of the guide groove 35 is open downward.
In the completely detached state, the guide groove 35 is formed
straightly upward by a certain distance from the peripheral part
35b. As such, inserting the second housing 2 from upward into the
first housing 1 engages the guide pin 13 with the guide groove 35,
leading to the lever temporarily locked state shown in FIG. 7C.
In the lever temporarily locked state in FIG. 7C, rotating the
lever 3 in an arrow direction (downward and counterclockwise) in
FIG. 7C moves the guide groove 35 along the guide pin 13, leading
to the main circuit mated state shown in FIG. 7B. The guide groove
35 is so formed that a distance R from the rotary shaft 24 for the
lever 3 to the guide groove 35 becomes gradually smaller from the
lever temporarily locked state in FIG. 7B to the main circuit mated
state in FIG. 7A. As such, rotation of the lever 3 works for
pushing the second housing 2 into the first housing 1.
Then, in the main circuit mated state in FIG. 7B, rotating the
lever 3 in the arrow direction (downward and counterclockwise)
moves the guide groove 35 along the guide pin 13, leading to the
completely mated state shown in FIG. 7A. The guide groove 35 is so
formed that the distance R from the rotary shaft 24 for the lever 3
to the guide groove 35 is constant from the main circuit mated
state in FIG. 7B to the completely mated state in FIG. 7A. As such,
rotation of the lever 3 can prevent the second housing 2 from being
pushed any further and the lever 3 alone moves, allowing the
connector part 34 of the lever 3 to mate with the connector part 12
of the first housing 1.
<Inner Structure of SDSW 100>
FIG. 8 is a cross sectional view of the SDSW 100 taken along the
line VIII-VIII in FIG. 6A. Referring to FIG. 8, an inner structure
of the SDSW 100 is to be set forth. A fuse 29 is disposed inside
the cover 4 of the second housing 2. A pair of thin plate terminals
27a, 27b (otherwise referred to as "first switch terminals") are
connected at respective ends of the fuse 29 in the
frontward-rearward direction, where a bolt 28 is used for fixing
the fuse 29 to each of the first switch terminals 27a, 27b. Being
bent into an alphabetical L upside down in FIG. 8, each of the
first switch terminals 27a, 27b passes through a base face of the
second housing 2. A case part 2c protrudes from a base face of the
second housing 2, covering a periphery of each of the first switch
terminals 27a, 27b. The first switch terminals 27a, 27b each have a
length that is so specified that a head end of each of the first
switch terminals 27a, 27b does not protrude more downward than the
case part 2c.
A pair of thin plate terminals 14a, 14b (otherwise referred to as
"main circuit terminals") pass through a base face of the first
housing 1. Corresponding to the case part 2c of the second housing
2, a case part 1c protrudes on an inner base face of the first
housing 1. The terminals 14a, 14b each have a length that is so
specified that a head end of each of the terminals 14a, 14b does
not protrude more upward than the case part 1c. The case part 1c of
the first housing 1 is received in the case part 2c of the second
housing 2.
Head end parts 14aH, 14bH of the respective main circuit terminals
14a, 14b are each bent into an alphabetical R. each forming a plate
spring. A head end of each of the first switch terminals 27a, 27b
is pushed between the respective main circuit terminals 14a, 14b
and the case part 1c, thus allowing the terminal 14a to contact the
terminal 27a and the terminal 14b to contact the terminal 27b. As
such, the main circuit terminals 14a, 14b can be connected with
each other via the first switch terminals 27a, 27b and the fuse 29,
thus turning on the main circuit switch 100A. Besides, the main
circuit terminals 14a, 14b are respectively connected with cables
18a, 18b (see FIG. 4A or FIG. 4B). A bolt through hole 1d for
mounting the first housing 1 to the vehicle 20 is provided on the
base face of the first housing 1.
As shown in FIG. 4B, a terminal 36 (otherwise referred to as
"second switch terminal") having a cross section shaped
substantially into an alphabetical U is mounted in the connector
part 34 (otherwise referred to as "inserted connector part 34") of
the lever 3. The second switch terminal 36 has a length that is so
specified that the second switch terminal 36 does not protrude from
an opening end face 34a below the connector part 34. As such, the
connector part 34 covers a periphery of the terminal 36. The second
switch terminal 36 has a first part and a second part defining
therebetween an inner width which is narrower downward in a
right-and-left direction. A lower end part of the second switch
terminal 36 is elastically deformable around an upper end part of
the terminal 36 outwardly on right and left sides (see FIG. 11). As
shown in FIG. 8, on a rear face of the connector part 34, an
opening part 34b is defined continuously with the opening end face
34a, thus opening the lower face and rear face of the connector
part 34.
A base plate 15 is fixed in the connector part 12 (otherwise
referred to as "receiving connector part 12") of the first housing
1. The base plate 15 extends upward and downward, with respective
left and right faces thereof fitted with plate terminals 16a, 16b
(otherwise referred to as "mated state sensor terminals"), as shown
in FIG. 11. The base plate 15 has a length that is so specified
that the base plate 15 does not protrude more upward than the
connector part 12. As such, the connector part 12 covers the
periphery of the base plate 15.
In other words, the mated state sensor terminals 16a, 16b are
provided in the receiving connector part 12 in such a configuration
as not to protrude from an opening end face 12b of the receiving
connector part 12.
An upper end part of the base plate 15 is formed into an
alphabetical R. Via the upper end part, the base plate 15 mates in
a gap G3 between right and left extensions of the terminal 36.
Besides, the terminals 16a, 16b are connected respectively with
cables 17a, 17b shown in FIG. 4B.
In FIG. 8, the connector part 34 is completely received in the
connector part 12 of the first housing 1. In this state, the base
plate 15 mates in the terminal 36, allowing the terminal 36 to
contact the terminals 16a, 16b. As such, the terminals 16a, 16b are
connected with each other via the terminal 36, thus turning on the
mated state sensor switch 100B.
Besides, in FIG. 8, a step part 12a is provided on the front face
of the connector part 12 of the first housing 1. The step part 12a
defines a space SP between the connector part 12 and the front end
face of the base plate 15. The space SP has such a scale that, for
receiving the connector part 34 in the connector part 12 by
rotating the lever 3, an angled part of the connector part 34 does
not interference with the connector part 12.
According to embodiment, the second housing 2 has the locking
member 26 which is so configured as to implement the following
operations: Rotation of the lever 3 is once stopped in the main
circuit mated position (first certain position P1) (see FIG. 4A),
then, the lever 3 is rotated to the completely mated position
(second certain position P2) (see FIG. 6A), such that the lever 3
can be locked.
Hereinafter, the locking member 26 is to be set forth.
<Structure of Locking Member 26>
As shown in FIG. 5B and FIG. 8, the locking member 26 has:
a support plate 261 standing on the upper face of the step part 2b
at the front end face of the second housing 2, and
a nail part 262 provided at an upper end part of the support plate
261 and extending in right-left direction.
Each of the divided right support plate 261 and left support plate
261 has a plate thickness which is thin in the frontward and
rearward directions. Therefore, bending rigidity of the support
plate 261 in the frontward and rearward directions is low. As such,
the support plate 261 is elastically deformable in the frontward
and rearward directions.
<Operation of Locking Member 26>
FIG. 9A, FIG. 9B and FIG. 9C each are an enlarged side view of the
locking member 26 in operation, where FIG. 9B shows the main
circuit mated state, and FIG. 9C shows the completely mated
state.
As shown in FIG. 9A, the nail part 262 has an upper face 262a and a
lower face 262b which are formed substantially horizontal. The nail
part 262 protrudes more frontward than the support plate 261, and
protrudes more upward than the upper face of the cover 4. Around a
lower end part of the support plate 261, the locking member 26 is
elastically deformable rearward, as depicted by a broken line.
FIG. 9B shows the locking member 26 in the main circuit mated state
in combination with the lever 3's first connector member 32
contacting the locking member 26. On the rear end face of the first
connector member 32, a protrusion 321 is provided corresponding to
the nail part 262. In the main circuit mated state in FIG. 9B, the
nail part 262 is positioned on a rotation track L of the first
connector member 32. As such, the protrusion 321 abuts on the upper
face 262a of the nail part 262, preventing downward rotation of the
lever 3.
The upper face of the protrusion 321 of the first connector member
32 is tapered rearward. Therefore, an upper end 262c of the nail
part 262 protrudes more upward than the protrusion 321, allowing a
finger to push rearward the upper end 262c of the nail part 262. In
the main circuit mated state in FIG. 9B, pushing rearward (rotary
direction Dr) the upper end 262c elastically deforms the locking
member 26 as depicted by the broken line, thus removing the nail
part 262 reward out of the rotation track L of the first connector
member 32. As such, nothing prevents the rotation of the lever 3,
thus rotating the lever 3 more downward.
After the rotating of the lever 3, removing the finger from the
nail part 262 returns the locking member 26 to an original position
by means of an elastic force, as shown in FIG. 9C. This state is
defined as the completely mated state. In the completely mated
state, the upper face of the protrusion 321 is positioned beneath
the lower face 262b of the nail part 262. As such, an upward
rotation of the lever 3 can be prevented, thus locking the lever
3.
Besides, for moving from the completely mated state to the main
circuit mated state, the upper end 262c of the locking member 26 is
pushed rearward with the finger to thereby remove the nail part 262
rearward, thus rotating the lever 3 upward.
<Method of Bringing SDSW 100 into Mated State>
A method of bringing the SDSW 100 into the mated state is to be set
forth.
FIG. 10 is a time chart showing state changes of the SDSW 100 for
bringing the power supply circuit 10 into the conduction state.
FIG. 11 shows operations corresponding to respective time points A
to D of the time chart in FIG. 10.
For implementing maintenance and the like of the power supply
system, the SDSW 100 should be in the completely detached state. In
the completely detached state, the main circuit switch 100A is
turned off and the mated state sensor switch 100B is turned off,
thus unlocking the first and second connector housings 1, 2 of the
SDSW 100.
(Time Point A)
In the completely detached state, inserting the first housing 1
into the second housing 2 and thereby inserting the guide pin 13
into the guide groove 35 brings about the lever temporarily locked
state (time point A). In the lever temporarily locked state, as
shown in FIG. 11, the first switch terminals 27a, 27b of the second
housing 2 respectively contact the main circuit terminals 14a, 14b
of the first housing 1, thus turning on the main circuit switch
100A.
(Time Point B)
In the lever temporarily locked state, rotating the lever 3
downward pushes the second housing 2 in the first housing 1. Then,
the protrusion 321 of the first connector member 32 is caused to
contact the nail part 262 of the locking member 26, thus stopping
the rotation of the lever 3, to thereby stop the lever 3 in the
main circuit mated position (first certain position P1). In this
state, the first switch terminals 27a, 27b keeping the contact
respectively with the main circuit terminals 14a, 14b are pushed
downward while the second switch terminal 36 is kept spaced apart
from the mated state sensor terminals 16a, 16b, thus turning on the
main circuit switch 100A and keeping the mated state sensor switch
100B turned off(time point B).
(Time Point C)
In this state, pushing the upper end 262c of the locking member 26
rearward deforms the locking member 26 rearward, thus removing the
nail part 262 rearward from the rotation track L of the protrusion
321. As such, the lever 3 locked by the locking member 26 is
unlocked, thus allowing the lever 3 to be rotatable more downward.
With the nail part 262 removed rearward, rotating the lever 3
downward allows the terminal 36 to contact the mated state sensor
terminals 16a, 16b, thus turning on the mated state sensor switch
100B (time point C).
(Time Point D)
Further rotating the lever 3 downward to the completely mated
position (second certain position P2) moves the protrusion 321 more
downward than the lower face 262b of the nail part 262. In this
state, the elastic force returns the nail part 262 to the original
position. As such, the lever 3 is locked by means of the locking
member 26, bringing about the completely mated state (time point
D).
Described above is the method of bringing the SDSW 100 into the
mated state after the maintenance and the like.
For bringing the SDSW 100 into the detached state for the
maintenance and the like of the power supply system, a method
having procedures opposite to the above described should be
implemented. In this case, engaging an index finger and a middle
finger with the taper parts 32a, 32a (see FIG. 4) provided on
respective left and right sides at the lever 3's head end part 3a
and sandwiching the connector part 34 with the index finger and
middle finger can easily rotate the lever 3 upward.
<Operations and Effects>
The SDSW 100 according to the above embodiment can bring about the
following operations and effects. (1) Rotating the lever 3 can mate
the second housing 2 in the first housing 1 and thereby mate the
connector part 34 of the lever 3 with the connector part 12 of the
first housing 1, thus turning on the main circuit switch 100A and
the mated state sensor switch 100B.
Therefore, the SDSW 100 can be small in size. (2) Rotating the
lever 3 in one direction turns on or off the main circuit switch
100A and the mated state sensor switch 100B, thus smoothing the
operations of the SDSW 100 and accomplishing quick operations of
the SDSW 100 in case of emergency and the like. (3) Providing the
locking member 26 on the rotation track L of the lever 3 allows the
locking member 26 to once lock (stop) the rotation of the lever 3,
thus smoothly accomplishing a transfer to the main circuit mated
state where only the main circuit switch 100A is turned on. (4)
Pushing the upper end 262c of the locking member 26 rearward
thereby removing the locking member 26 from the rotation track L of
the lever 3 can smoothly accomplish the transfer from the main
circuit mated state to the completely mated state. (5) With the
locking member 26 locking the lever 3 to the completely mated
position (second certain position P2), the connector housings
(first housing 1, second housing 2) of the SDSW 100 can be
prevented from being detached by means of vehicle vibration and the
like during the travel period, thus stably bringing the power
supply circuit 10 into the conduction state. (6) The second switch
terminal 36 is so configured as not to protrude from the opening
end face 34a of the inserted connector part 34, while the mated
state sensor terminals 16a, 16b (or the base plate 15) are so
configured as not to protrude from the opening end face 12b of the
receiving connector part 12. Thereby, the terminals 36, 16a, 16b
can be prevented from contacting any obstacle and the like in the
detaching of the second housing 2 from the first housing 1, thus
protecting the terminals 36, 16a, 16b. (7) It is not necessary to
slide the connector housings (first housing 1, second housing 2).
Therefore, an extra receiving space in the housings is not
necessary, thus preventing dust entry and the like in the SDSW 100.
(8) The gap G3 between right and left extensions of the second
switch terminal 36 becomes narrower downward, thus narrowing down
the gap G3 at an inlet of the second switch terminal 36, to thereby
prevent the dust entry. (9) In continuation with the opening end
face 34a of the connector part 34, the opening part 34b is defined
at the rear part of the connector part 34, thus easily removing the
dust that may have entered the second switch terminal 36. In the
completely mated state, the opening part 34b is bidden, thus
preventing dust entry through the opening part 34b.
Although the present invention has been described above by
reference to the certain embodiment, the present invention is not
limited to the embodiment described above. Modifications and
variations of the embodiment described above will occur to those
skilled in the art, in light of the above teachings.
According to the embodiment, the nail part 262 of the locking
member 26 has a cross section substantially rectangular (see FIG.
9). However, not limited to the rectangle, the locking member 26
may have such a configuration that, for example, an upper part of
the nail part 262 is shaped into an alphabetical R, as shown in
FIG. 12A.
As such, during the time for rotating the lever 3, the protrusion
321 pushes the locking member 26 rearward. Therefore, it is not
necessary to use the finger for pushing the upper end part of the
locking member 26 rearward, thus smoothing the mating of the SDSW
100.
In this case, the force for rotating the lever 3 is increased when
the protrusion 321 rides over the nail part 262, thereby once
stopping the lever 3 in the main circuit mated state.
Otherwise, the increased force for rotating the lever 3 can
immediately bring about the completely mated state, without once
stopping the lever 3 in the main circuit mated state.
Contrary to the above, as shown in FIG. 12B, forming a lower part
of the nail part 262 into an alphabetical R can eliminate the need
of pushing with the finger the locking member 26 from the
completely mated state to the completely detached state, thus
smoothly bringing the SDSW 100 into the detached state.
With the lever 3 configured to rotate around the rotary shaft 24,
the second switch terminal 36 moves along an arc track 36A. Then,
as shown in FIG. 13, head end parts 16aH, 16bH of the respective
terminals 16a, 16b of the connector part 12 of the first housing 1
may be provided along the rotation track (arc track 36A) of the
terminal 36. As such, the terminal 36 mates straightly with the
head end parts 16aH, 16bH of the respective terminals 16a, 16b.
Therefore, in the mating operation, the terminals 16a, 16b can be
prevented from being deviated from the connector part 12 and the
terminal 36 can be prevented from being deviated from the connector
part 34, which deviations may be caused with an excessive force
applied to the terminals 16a, 16b, 36.
Besides, according to embodiment, the guide groove 35 is formed in
the arm plate 31 of the lever 3 and the guide pin 13 is allowed to
engage the guide groove 35. As such, the rotation of the lever 3
allows the second housing 2 to mate with or to be detached from the
first housing 1.
The mating-detaching mechanism (including the guide pin 13 and the
guide groove 35) is, however, not limited to the above
structure.
Moreover, the first housing 1 includes a pair of the terminals 14a,
14b as the main circuit terminals, and a pair of the terminals 16a,
16b as the mated state sensor terminals.
Meanwhile, the second housing 2 includes the terminals 27a, 27b as
the first switch terminals, and the terminal 36 as the second
switch terminal.
The configuration of each of the terminals 14a, 14b, 16a, 16b, 27a,
27b, 36 is not limited to the above.
The structure of the SDSW 100 is not limited to the above described
as long as the following operations are implemented.
The lever 3 is rotated to the main circuit mated position (first
certain position P1) to thereby connect the main circuit terminal
14a with the first switch terminal 27a and connect the main circuit
terminal 14b with the first switch terminal 27b, thus connecting
the main circuit terminals 14a, 14b with each other and connecting
the first switch terminals 27a, 27b with each other.
Then, the lever 3 is rotated to the completely mated position
(second certain position P2) to thereby connect the second switch
terminal 36 with the mated state sensor terminal 16a and with the
mated state sensor terminal 16b, thus connecting the mated state
sensor terminals 16a, 16b with each other.
The above operations bring the power supply circuit 10 into the
conduction state.
Moreover, the locking member 26 serves as the movable member 26,
such that the elastic deformation of the locking member 26 locks
the lever 3. The structure and operation of the lock mechanism are,
however, not limited to the above.
The configuration of the connector parts, that is, the receiving
connector part 12 and the inserted connector part 34 having
respectively the mated state sensor terminals 16a, 16b and the
second switch terminal 36 is not limited to the above
described.
That is, as long as the feature, function and the like of the
present invention can be accomplished, the present invention is not
limited to the power supply circuit connector 100 according to the
embodiment.
This application is based on a prior Japanese Patent Application
No. P2007-007737 (filed on Jan. 17, 2007 in Japan). The entire
contents of the Japanese Patent Application No. P2007-007737 from
which priority is claimed are incorporated herein by reference, in
order to take some protection against translation errors or omitted
portions.
The scope of the present invention is defined with reference to the
following claims.
* * * * *